Rachel is a young genius girl who came from United States to JUDA for her interest in Machinas. She works as chief of research and development for JUDA. Also, among her duties is the maintenance and analysis of the Machinas. She often badmouths Kouichi for his recklessness and occasional foolish statements. Her family is scientist like her. Because of that she doesn't have strong bonds with her family. She likes Machinas more than anything else.